Whats the minimum amount of numbers you need to solve a Sudoku?

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Whats the minimum amount of numbers you need to solve a Sudoku?

2006-09-05 21:12:51 · 3 answers · asked by Abbo 1 in Science & Mathematics ➔ Mathematics

Sorry, was a bit unclear. Whats the minimum amount of numbers there have to be in a regular 9x9 sudoku before you start in order to be able to solve it?

2006-09-05 21:38:31 · update #1

3 answers

A solution has been found which requires only 17 hints, provided that those 17 are chosen carefully. This is not always sufficient, though. It's easy to create a soduko with 77 hints and still no unique solution. With 78 hints you can always solve it.

2006-09-05 21:40:30 · answer #1 · answered by helene_thygesen 4 · 2⤊ 0⤋

1-9

2006-09-05 21:18:00 · answer #2 · answered by anshulgupta1988 3 · 0⤊ 2⤋

u need 9 los of 9 numbers or 9x9 which, of course, equals 81.

2006-09-05 21:23:49 · answer #3 · answered by cheek peas 2 · 0⤊ 2⤋